ECantona
n00b
Joined: 26 Apr 2005
Posts: 65
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 Posted: Sun Jul 01, 2007 6:02 pm Post subject: conservative governor doesn't slow down the cpu on core2duo |
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I've got a strange problem with cpu frequency scaling. I have a core 2 duo cpu on my laptop. I'm using gentoo-sources-2.6.20-r8 with smp enabled. Default governor is performance and userspace and conservative governors are modules. In my /etc/conf.d/local.start
| Code: | echo conservative > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo conservative > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor |
I've got there two lines to use conservative governor.
The bizarre thing is, most of the times, it works perfect. But sometimes even though the governor is set to conservative, my cpu never speeds down automatically once it speeds up. I mean, I can speed it down with userspace governor. But when I switch back to conservative governor and if it speed up after some load, it stays at full speed and never slows down again. I have to restart my machine to correct it. Unloading and reloading modules didn't change anything. If it works fine at the boot, it works until I reboot, and if doesn't at the boot, it never works again until I reboot. It was the same thing with 2.6.19 also if I'm not mistaken.What can be the problem? |
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Kernel & Hardware
